Looks like the ball came out of his gun. Gary Baum captured a similar image a few years ago. A player was shooting a Cyborg RX and somehow the bolt assembly flew out the back, along with a ball which subsequently hit the guy in the face.

Here is that image

__________________Gary Baumwww.paintballphotography.com
Official PSP Photographer
paintballphotography.com is looking for teams to sponsor PM me for details